Web
Test HTTP behavior, redirects, speed, SEO markup and the site's technology.
HTTP Header CheckerView the full request and response headers for any URL, including caching, compression and server details.Redirect CheckerFollow every redirect hop with status codes, timing and headers, and spot loops and chains.Domain Health CheckRun every DNS, email, TLS and web security check in one go and get a single grade with a plain-language fix list.Website Speed TestSee what real Chrome visitors experience, and which bytes on one page load are worth removing.SEO CheckerCheck one page's indexability, canonical, metadata, headings, structured data, robots.txt and sitemap.Technology LookupIdentify the CMS, framework, server, CDN and analytics a site discloses, with the evidence for each.